Annunciator.



Patented Dec. 5,1916.

A 2P E 1.9 A IIIIMIE H. A. STEVENS.

ANNUNCIATOR.

APPLICATION FILED JAW. 3. 1916.

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" UNITED sTATEs PATENT OFFICE.

HARVEY A. STEVENS, BUFFALO, NEW YORK.

AN NUN CIATOR.

To all/whom t may concern.'

Be it known that I, HARVEY A. STEVENS, a citizen offthe rUnited. States,residing at Buffalo, in the county of vErie and State of New York, haveinvented new and useful Improvements in' Annunciators, of which.

the following is a specification.

My invention pertains to annunciators; and it contemplates the provisionof a sim- !0 ple kand inexpensively installed annunciator, constructedwith a `view to making known to avperson in authority when gasolene orother liquidin a tank is dangerously low.

The annunciator is also, by preference, constructed with a view toenabling the person in authority `to ascertain, whenever necessary, theamount of gasolene or other liquid in the tank.

With the foregoing in mind the invention l) in all ofits details will befullyy understood from the following description and claim when the sameare read in connection with the drawings, accompanying and forming partofthis specification, in which:

, I6 Figure 1 is a .view showing in diametrical section a tank equippedwith my improvement and also showing diagrammati'cally a normally-openelectrical circuit in whichmy improvement is arranged. Fig. 2 is adetail plan of a portion of the tank top. Similar numerals ofreference'desi corresponding parts in both views o drawings.

In the present and preferred embodiment 85 of my invention the tank 1 is.provided in its top with a threaded aperture 2 which may be used ifdesired, as the filling aperture, and which is normally closed by athreaded ,and removable .plug 3. .The said plug is chambered, asindicated by 4, and anged as indicated by 5, and to the said iiange ofthe plug is attached by screws 6 a plate 7 in which1s a central aperture8 and lone or more vent apertures 9; the latter being provided in orderto permit fumes to escape from `the tank and in thatr way lessen theliabilityof an explosion. It willV also be observed that from thebottomwo'f the plug chamber a guide tube 10 depends; said guide tubebeing connected with the plugin any vmanner compatible with the purposeof my ate the invention.- Pivoted at 11 on the plate 7 is a vclosureplater 12, having a finger-piece 13 whereby when desired the closureplate can beswung from over the apertures.

Specification of Letters Patent. Patented Dec, 5, 1916,

Application med January 3, 1916. Serial No. 69,900. `Y

Movable vin the tank `is a float 14, the stem 15 of which is carriedupwardly through the tube 10 `and intothe chamber of the plug andterminates at its upper end in a contact button 16.

Arranged in and electrically isolated from the -plug 3 is a terminalplate 17, designed and adapted to coperate with the button 16 in closinga normally-open electrical circuit and actuating a signal when thesupply of gasolene in the tank is almost exhausted. Any suitable circuitarrangement may be' resorted to, such, for instance, as the oneillustrated in which a conductor 18 leads from the plate 17 to thepluspole of a source 70 of electric energy 19, the negative polev of whichis connected through a conductor 20 with an audible or visible signal 21which, in turn, is connected through a conductor 22 with the tank 1.Thus it will be manifest 75 that when the button 16 contacts withtheplate 17, the circuit will be completed and the signal or annunciator21actuated to apprise the person in authority of the low stage of gasolenevor iuid.

`When deemed desirable, the conductor 22, instead of being connected tothe tank 1, may be connected to a terminal 23 arranged on but insulatedfromthe terminal 17 and designed to contact `with the button 16 when 85the latter is in contact with a projection 24 on terminal plate 17.

v When at any time the person in authority desires to ascertain thequantity of gasolene in the tank, it is simply necessary for such`person to swing the plate 12 from overthe aperture- 8, whereupon thestem 15 will be raised by the ioatV 14 through the aperture 8, and willindicate the quantity of gasolene in the tank.

My -improvement is designed especially for use on motor vehicles, but isobviously designed to be used to advantage in other connections.

movable means 1s displaced and also having means on the stem and movablein the chamber of the plug and adapted to contact with 10 said terminal.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

HARVEY A. STEVENS.

AARON DUvAu., Lnux H. Rxcnnnsolv.

